/***************************************************************************
 * Copyright 2012-2013 TXT e-solutions SpA
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * This work was performed within the IoT_at_Work Project
 * and partially funded by the European Commission's
 * 7th Framework Programme under the contract ICT-257367.
 *
 * Authors:
 *      Salvatore Piccione (TXT e-solutions SpA)
 *
 * Contributors:
 *        Domenico Rotondi (TXT e-solutions SpA)
 **************************************************************************/
package it.txt.ens.core.util.parser;

import it.txt.ens.core.X509CertificateRetrievalParameters;
import it.txt.ens.core.factory.X509CertificateRetrievalParametersFactory;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @author Salvatore Piccione (TXT e-solutions SpA - salvatore.piccione AT txtgroup.com)
 * @author Domenico Rotondi (TXT e-solutions SpA - domenico.rotondi AT txtgroup.com)
 *
 */
public class X509CertificateRetrievalParametersMapParser {
    public static X509CertificateRetrievalParameters parse (
            X509CertificateRetrievalParametersFactory factory, Map<?,?> propertyMap) 
            throws ParseException, IllegalArgumentException {
        if (factory == null)
            throw new IllegalArgumentException("The factory cannot be null");
        if (propertyMap == null)
            throw new IllegalArgumentException("The property container cannot be null");
        if (propertyMap.isEmpty())
            throw new IllegalArgumentException("The property container cannot be empty");
        
        List<String> missingProperties = new ArrayList<String>(
                X509CertificateRetrievalParametersFactory.NUMBER_OF_MANDATORY_FIELDS);
        try {
            String subjectID;
            if ((subjectID = (String) propertyMap.get(X509CertificateRetrievalParametersFactory.SUBJECT_ID)) == null)
                missingProperties.add(X509CertificateRetrievalParametersFactory.SUBJECT_ID);
            
            String privateKeyPwdSTR;
            if ((privateKeyPwdSTR = (String) propertyMap.get(X509CertificateRetrievalParametersFactory.PRIVATE_KEY_PASSWORD)) == null)
                missingProperties.add(X509CertificateRetrievalParametersFactory.PRIVATE_KEY_PASSWORD);
            
            if (missingProperties.size() > 0)
                throw new ParseException(missingProperties);
            
            return factory.create(subjectID, privateKeyPwdSTR.toCharArray()); 
        } catch (ClassCastException e) {
            throw new ParseException("An error occurred while casting a property value to a String",e);
        }
    }
}
